CVE-2025-34104

Piwik Authenticated RCE via Custom Plugin Upload

State: Published
Severity: 9.4 Critical
Published: Jul 15, 2025
Updated: Jul 14, 2026
Reserved: Apr 15, 2025

Description

An authenticated remote code execution vulnerability exists in Piwik (now Matomo) versions prior to 3.0.3 via the plugin upload mechanism. In vulnerable versions, an authenticated user with Superuser privileges can upload and activate a malicious plugin (ZIP archive), leading to arbitrary PHP code execution on the underlying system. Starting with version 3.0.3, plugin upload functionality is disabled by default unless explicitly enabled in the configuration file.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	VulnCheck

Weaknesses

CWE-434 Unrestricted Upload of File with Dangerous Type
CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
Web Analytics PlatformPiwik (now Matomo)	before 3.0.3Affected

References

https://matomo.org/changelog/piwik-3-0-3/vendor-advisory
https://matomo.org/faq/plugins/faq_21/product
https://firefart.at/post/turning_piwik_superuser_creds_into_rce/third-party-advisory
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/piwik_superuser_plugin_upload.rbexploit
https://www.vulncheck.com/advisories/piwik-authenticated-rce-via-custom-plugin-uploadthird-party-advisory

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